1201545806 has 32 divisors (see below), whose sum is σ = 1958264640. Its totient is φ = 551206656.

The previous prime is 1201545803. The next prime is 1201545809. The reversal of 1201545806 is 6085451021.

It is an interprime number because it is at equal distance from previous prime (1201545803) and next prime (1201545809).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201545803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206570 + ... + 212306.

It is an arithmetic number, because the mean of its divisors is an integer number (61195770).

Almost surely, 2^1201545806 is an apocalyptic number.

1201545806 is a deficient number, since it is larger than the sum of its proper divisors (756718834).

1201545806 is a wasteful number, since it uses less digits than its factorization.

1201545806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5948.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 1201545806 is about 34663.3207584040. The cubic root of 1201545806 is about 1063.1146689471.

Adding to 1201545806 its reverse (6085451021), we get a palindrome (7286996827).

The spelling of 1201545806 in words is "one billion, two hundred one million, five hundred forty-five thousand, eight hundred six".